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#include"iostream" using namespace std; char ISBN[13]; int main(){ cin>>ISBN; int n=0; n+=(ISBN[0]-‘0‘)*1; n+=(ISBN[2]-‘0‘)*2; n+=(ISBN[3]-‘0‘)*3; n+=(ISBN[4]-‘0‘)*4; n+=(ISBN[6]-‘0‘)*5; n+=(ISBN[7]-‘0‘)*6; n+=(ISBN[8]-‘0‘)*7; n+=(ISBN[9]-‘0‘)*8; n+=(ISBN[10]-‘0‘)*9; n%=11; if(n==10)n=‘X‘; else n+=‘0‘; if(n==ISBN[12])cout<<"Right"<<endl; else{ ISBN[12]=n; cout<<ISBN<<endl; } return 0; }
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原文地址:http://www.cnblogs.com/lyqatdl/p/4727007.html